CN219402479U - Round nose knife - Google Patents

Abstract

The application discloses circular nose sword includes: a shank and a cutting portion; the cutting part is located the one end of handle of a knife, and cutting part periphery spiral is around being equipped with a plurality of week cutting edges, and the one end that the handle of a knife was kept away from to cutting part is equipped with a plurality of first end cutting edges, and first end cutting edges and week cutting edges one-to-one connect, connect gradually the transition between first end cutting edges and the week cutting edges has second end cutting edges and fillet cutting edges, and the cutting edge inclination of first end cutting edges and second end cutting edges is the positive value, and the cutting edge inclination of first end cutting edges is greater than the cutting edge inclination of second end cutting edges, is formed with the chip groove between the adjacent week cutting edges, is formed with the chip groove between the adjacent first end cutting edges. The circular nose knife can reduce the abrasion of the knife tool, improve the surface machining quality of the product, and has higher chip removal capability.

Description

Round nose knife

Technical Field

The application relates to the field of cutters, in particular to a circular nose cutter.

Background

In the related art, when the circular nose knife is used for milling and rough machining, the traditional circular nose knife can meet the requirement of large cutting width and cutting depth, so that the product allowance can be removed, and the machining efficiency is ensured. However, when the circular nose knife is used for machining, the cutter is worn quickly, and the machined workpiece has the problems of poor surface finish and poor surface flatness. Therefore, how to reduce tool wear and ensure the quality of a workpiece while ensuring the machining efficiency is a problem that needs to be solved at present.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the circular nose knife can reduce the abrasion of the knife tool, improve the surface processing quality of the product and has higher chip removal capability.

A rounded nose blade in accordance with an embodiment of the first aspect of the utility model, comprising: a shank and a cutting portion; the cutting part is located the one end of handle of a knife, cutting part periphery spiral is around being equipped with a plurality of week cutting edges, cutting part is kept away from the one end of handle of a knife is equipped with a plurality of first end cutting edges, first end cutting edges with week cutting edges one-to-one is connected, first end cutting edges with connect gradually transition between the week cutting edges has second end cutting edges and fillet cutting edges, the cutting edge inclination of first end cutting edges and second end cutting edges is the positive value, just the cutting edge inclination of first end cutting edges is greater than the cutting edge inclination of second end cutting edges, adjacent be formed with the chip groove between the week cutting edges, adjacent be formed with the chip pocket between the first end cutting edges.

The circular nose knife provided by the embodiment of the utility model has at least the following beneficial effects: the circular nose knife comprises a knife handle and a cutting part, wherein the cutting part is arranged at one end of the knife handle, a plurality of peripheral edges are spirally wound around the periphery of the cutting part, a plurality of first end edges are arranged at one end, far away from the knife handle, of the cutting part, a second end edge and a round corner edge are sequentially connected between the first end edges and the peripheral edges, namely, the second end edges and the round corner edges are arranged from one end, close to the peripheral edges, of the first end edges to one end, close to the first end edges, of the peripheral edges, namely, the first end edges sequentially pass through the second end edges and the round corner edges and are transited to the peripheral edges, and the cutting force during milling of the cutting part can be dispersed through the first end edges, the second end edges, the round corner edges and the peripheral edges, so that the abrasion of the circular nose knife edges is reduced, and the abrasion resistance of the knife is further improved; meanwhile, as the blade inclination angles of the first end blade and the second end blade are positive values, namely the end blade and the second end blade are both arranged in an inward inclined manner, and the blade inclination angle of the first end blade is larger than that of the second end blade, the transition between the round corner blade and the first end blade can be carried out through the second end blade, the situation that the round corner blade is directly connected with the first end blade to cause the workpiece to generate cutter lines is reduced, and the smoothness of the processing surface of the workpiece is improved; in addition, chip flutes are formed between adjacent first end edges, chip grooves are formed between adjacent peripheral edges, so that cut waste chips can be discharged along the chip flutes and the chip grooves in sequence, the problems of burrs and roughness on the surface of a workpiece caused by poor chip removal are solved, and the chip removal capacity of the cutter is improved; therefore, the circular nose knife can reduce the abrasion of the knife tool, improve the surface processing quality of the product, and has higher chip removal capability.

According to some embodiments of the utility model, the chip flute comprises a first chip flute and a second chip flute, the second chip flute being located between the first chip flute and the chip flute.

According to some embodiments of the utility model, the first end edge has an edge rake angle of 2.5 ° and the second end edge has an edge rake angle of 0.2 °.

According to some embodiments of the utility model, the peripheral edge is provided with a peripheral edge rake surface and a first clearance flank surface and a second clearance flank surface which are arranged in sequence.

According to some embodiments of the utility model, the rake angle of the peripheral edge is 15 °, the first relief angle of the peripheral edge is 10 °, and the second relief angle of the peripheral edge is 28 °.

According to some embodiments of the utility model, the first relief surface is an arc surface.

According to some embodiments of the utility model, the first end edge and the second end edge are provided with a first rake surface and a second rake surface which are sequentially arranged in clearance, and a third flank surface and a fourth flank surface which are sequentially arranged.

According to some embodiments of the utility model, the first rake angle of the first end edge and the second end edge is 8 °, the second rake angle of the first end edge and the second end edge is 12 °, the third relief angle of the first end edge and the second end edge is 8 °, and the fourth relief angle of the first end edge and the second end edge is 20 °.

According to some embodiments of the utility model, the peripheral edge, the first end edge, the second end edge, and the rounded edge are each provided with three edges.

According to some embodiments of the utility model, the peripheral edge helix angle is 35 °.

Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application.

Drawings

The utility model is further described with reference to the accompanying drawings and examples, in which:

FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present utility model;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is a view of an end of a cutting portion away from a shank according to an embodiment of the present utility model;

FIG. 4 is a schematic view of a partial structure of a cross section of a peripheral edge in an embodiment of the present utility model;

fig. 5 is a schematic view of a partial structure of a cross section of an end blade according to an embodiment of the present utility model.

Reference numerals:

100. a knife handle; 200. a cutting portion; 300. a peripheral edge; 400. a first end edge; 500. a second end edge; 600. a rounded edge; 700. a chip removal groove; 800. a first chip pocket; 900. and a second chip pocket.

Detailed Description

Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.

In the description of the present application, it should be understood that references to orientation descriptions, such as directions of up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the drawings, are merely for convenience of describing the present application and simplifying the description, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.

In the description of the present application, the meaning of a number is one or more, the meaning of a number is two or more, and greater than, less than, exceeding, etc. are understood to exclude the present number, and the meaning of a number above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present application, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present application can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical solution.

In the description of the present application, a description with reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

A circular nose knife according to an embodiment of the present utility model is described below with reference to fig. 1 to 5.

As shown in fig. 1 to 3, a circular nose tool according to an embodiment of the present utility model includes: a shank 100 and a cutting portion 200; the cutting portion 200 is located the one end of handle of a knife 100, and cutting portion 200 periphery spiral is around being equipped with a plurality of week cutting edges 300, and the one end that cutting portion 200 kept away from handle of a knife 100 is equipped with a plurality of first end cutting edges 400, and first end cutting edges 400 and week cutting edges 300 one-to-one connect, connect gradually the transition between first end cutting edges 400 and the week cutting edges 300 has second end cutting edges 500 and fillet cutting edges 600, and the edge inclination of first end cutting edges 400 and second end cutting edges 500 is the positive value, and the edge inclination of first end cutting edges 400 is greater than the edge inclination of second end cutting edges 500, is formed with chip groove 700 between the adjacent week cutting edges 300, is formed with the chip groove between the adjacent first end cutting edges 400.

It can be understood that the circular nose knife comprises a knife handle 100 and a cutting part 200, the cutting part 200 is arranged at one end of the knife handle 100, a plurality of peripheral edges 300 are spirally wound around the periphery of the cutting part 200, one end of the cutting part 200, which is far away from the knife handle 100, is provided with a plurality of first end edges 400, a second end edge 500 and a circular corner edge 600 are sequentially connected between the first end edges 400 and the peripheral edges 300, namely, the second end edges 500 and the circular corner edges 600 are arranged from one end of the first end edges 400, which is close to the peripheral edges 300, to one end of the peripheral edges 300, which is close to the first end edges 400, namely, the first end edges 400 are transited to the peripheral edges 300 through the second end edges 500 and the circular corner edges 600 in sequence, and the cutting force of the cutting part 200 during milling can be dispersed through the first end edges 400, the second end edges 500, the circular corner edges 600 and the peripheral edges 300, so that the abrasion of the circular nose knife edge is reduced, and the abrasion resistance of the knife is further improved; meanwhile, since the edge inclination angles of the first end edge 400 and the second end edge 500 are positive values, that is, the end edge and the second end edge 500 are both arranged in an inward inclination manner, and the edge inclination angle of the first end edge 400 is larger than that of the second end edge 500, the rounded corner edge 600 and the first end edge 400 can be transited through the second end edge 500, so that the condition that the rounded corner edge 600 is directly connected with the first end edge 400 to cause tool marks on a workpiece is reduced, and the smoothness of the machined surface of the workpiece is improved; in addition, chip flutes are formed between adjacent first end edges 400, chip grooves 700 are formed between adjacent peripheral edges 300, so that cut scraps can be sequentially discharged along the chip flutes and the chip grooves 700, the problems of burrs and roughness on the surface of a workpiece caused by poor chip removal are solved, and the chip removal capacity of the cutter is improved; therefore, the circular nose knife can reduce the abrasion of the knife tool, improve the surface processing quality of the product, and has higher chip removal capability.

It is understood that the flutes include a first flute 800 and a second flute 900, the second flute 900 being located between the first flute 800 and the flute 700. For example, as shown in fig. 3, in the present embodiment, the chip flute includes a first chip flute 800 and a second chip flute 900, which are sequentially disposed in an axial direction from an end of the cutting portion 200 away from the shank 100 to an end of the cutting portion 200 near the shank 100, so that chips can be smoothly discharged along the first chip flute 800, the second chip flute 900, and the chip flute 700.

It will be appreciated that the first end edge 400 has an edge rake angle of 2.5 deg., and the second end edge 500 has an edge rake angle of 0.2 deg.. For example, in the present embodiment, the specific value of the edge inclination angle of the first end edge 400 is 2.5 °, and the specific value of the edge inclination angle of the second end edge 500 is 0.2 °, i.e., during milling, the chips milled by the second end edge 500 will move in the direction approaching the axis along the first end edge 400 and be discharged through the chip flute and the chip groove 700.

It can be understood that the peripheral edge 300 is provided with a peripheral edge 300 rake surface and a first flank surface and a second flank surface which are arranged in sequence and are spaced. For example, as shown in fig. 4, in the present embodiment, a peripheral blade 300 rake surface, and a first flank surface and a second flank surface that are spaced apart are provided at the peripheral blade 300 in order, thereby improving sharpness of the peripheral blade 300.

It will be appreciated that the rake angle of the peripheral edge 300 is 15 °, the first relief angle of the peripheral edge 300 is 10 °, and the second relief angle of the peripheral edge 300 is 28 °. For example, as shown in fig. 4, in the present embodiment, the front angle of the peripheral edge 300 is α, and α=15°, thereby ensuring sufficient sharpness of the peripheral edge 300; the first relief angle of the peripheral edge 300 is β, and β=10°, and the second relief angle of the peripheral edge 300 is γ, and γ=28°, thereby ensuring that the side surface of the peripheral edge 300 has a sufficient clearance space, and also facilitating heat dissipation.

It is understood that the first relief surface is an arc surface. For example, as shown in fig. 4, in the present embodiment, the first relief surface is an arc surface, so that the peripheral edge 300 is not easily worn, and the chipping phenomenon is not easily generated, thereby improving the service life of the tool.

It will be appreciated that the first end edge 400 and the second end edge 500 are provided with a first rake surface and a second rake surface, which are sequentially arranged to avoid gaps, and a third flank surface and a fourth flank surface, which are sequentially arranged. For example, as shown in fig. 5, in the present embodiment, the first end edge 400 and the second end edge 500 are provided with the first rake surface and the second rake surface, which are sequentially arranged to be spaced, and the third flank surface and the fourth flank surface, which are sequentially arranged to be spaced, so that sharpness of the first end edge 400 and the second end edge 500 is improved.

It will be appreciated that the first rake angle of the first end edge 400 and the second end edge 500 is 8 °, the second rake angle of the first end edge 400 and the second end edge 500 is 12 °, the third relief angle of the first end edge 400 and the second end edge 500 is 8 °, and the fourth relief angle of the first end edge 400 and the second end edge 500 is 20 °. For example, as shown in fig. 5, in the present embodiment, the first rake angles of the first end blade 400 and the second end blade 500 are a, and a=8°, and the second rake angles of the first end blade 400 and the second end blade 500 are b, and b=12°, thereby ensuring sufficient sharpness of the first end blade 400 and the second end blade 500; the third relief angle of the first and second end edges 400 and 500 is 8 deg., and the fourth relief angle of the first and second end edges 400 and 500 is 20 deg., thereby facilitating heat dissipation of the first and second end edges 400 and 500.

It will be appreciated that the peripheral edge 300, the first end edge 400, the second end edge 500, and the rounded edge 600 are all provided with three edges. For example, as shown in fig. 1 to 3, in the present embodiment, the first end edge 400, the second end edge 500, the rounded edge 600, and the peripheral edge 300 are each provided with three edges.

In other embodiments, the cutting portion 200 may be configured with multiple edges such as four edges, five edges, and so on.

It will be appreciated that the peripheral edge 300 has a helix angle of 35. For example, in the present embodiment, the helix angle of the peripheral edge 300 is specifically 35 °.

In other embodiments, the helix angle of the peripheral edge 300 may take other values, as desired.

The embodiments of the present application have been described in detail above with reference to the accompanying drawings, but the present application is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present application. Furthermore, embodiments of the present application and features of the embodiments may be combined with each other without conflict.

Claims (9)

1. Circular nose sword, its characterized in that includes:

a knife handle;

cutting part locates the one end of handle of a knife, cutting part periphery spiral is around being equipped with a plurality of week cutting edges, cutting part keeps away from the one end of handle of a knife is equipped with a plurality of first end cutting edges, first end cutting edge with week cutting edge one-to-one is connected, first end cutting edge with connect gradually the transition between the week cutting edge has second end cutting edge and fillet cutting edge, the cutting edge inclination of first end cutting edge and second end cutting edge is positive value, just the cutting edge inclination of first end cutting edge is greater than the cutting edge inclination of second end cutting edge, adjacent be formed with the chip groove between the week cutting edge, adjacent be formed with the chip groove between the first end cutting edge

The chip flutes include first chip flutes and second chip flutes, the second chip flutes being located between the first chip flutes and the chip flutes.

2. The circular nose knife of claim 1, wherein the first end edge has an edge rake angle of 2.5 ° and the second end edge has an edge rake angle of 0.2 °.

3. The circular nose knife of claim 1, wherein the peripheral edge is provided with a peripheral edge rake surface and a first relief surface and a second relief surface arranged in sequence.

4. A circular nose knife according to claim 3, wherein the rake angle of the peripheral edge is 15 °, the first relief angle of the peripheral edge is 10 °, and the second relief angle of the peripheral edge is 28 °.

5. The circular nose blade of claim 4, wherein the first relief surface is an arcuate surface.

6. The circular nose knife of claim 1, wherein the first end edge and the second end edge are each provided with a first rake surface and a second rake surface that are sequentially arranged to avoid empty space, and a third flank surface and a fourth flank surface that are sequentially arranged.

7. The circular nose knife of claim 6, wherein the first rake angle of the first end edge and the second end edge is 8 °, the second rake angle of the first end edge and the second end edge is 12 °, the third relief angle of the first end edge and the second end edge is 8 °, and the fourth relief angle of the first end edge and the second end edge is 20 °.

8. The circular nose knife of claim 1, wherein the peripheral edge, the first end edge, the second end edge, and the rounded edge are each provided with three edges.

9. The circular nose knife of claim 1 wherein the peripheral edge helix angle is 35 °.